Soundgarden, Gaga top Lollapalooza lineup

Soundgarden, Green Day and Lady Gaga fans, get ready - these artists will headline Lollapalooza 2010.

The full lineup for the three-day summer music festival in Chicago's Grant Park came out Tuesday.

Other headliners include the Arcade Fire, The Strokes and Phoenix.

Lollapalooza organizers teased fans last week by releasing parts of the bands' names one letter at a time, in the style of television game show "Wheel of Fortune". "O" was the first letter released, fueling internet speculation and rumors.